Patents by Inventor Karel Slama

Karel Slama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Isomeric O-phosphonylmethyl derivatives of enantiomeric and racemic 9-(2,3-dihydroxypropyl)adenine
    Patent number: 4659825
    Abstract: This invention relates to isomeric O-phosphonylmethyl derivatives of the formula I ##STR1## wherein R.sup.5 designates an adenin-9-yl moiety, R.sup.4 are alternately a hydrogen atom and a --CH.sub.2 P(O)(OH).sub.2 group, and the configuration at the carbon atom in the position 2 is S, R or RS.The compounds according to the invention are biologically active as inhibitors of metabolic processes and in organism they are stable towards enzymes, cleaving phosphomonoester bonds.The said compounds exhibit also chemosterilizing action on insects.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: April 21, 1987
    Assignee: Ceskoslovenska akademie
    Inventors: Antonin Holy, Ivan Rosenberg, Karel Slama
  • Phenyl ethers having juvenile hormone activity
    Patent number: 4005150
    Abstract: Novel nitrophenyl and halophenyl compounds having a side chain substituted with hydroxy or ether radical useful for insect control.
    Type: Grant
    Filed: May 18, 1971
    Date of Patent: January 25, 1977
    Assignee: Ceskoslovenska akademie ved
    Inventors: Frantisek Sorm, Miroslav Svoboda, Jiri Zavada, Karel Slama, Zdenek Arnold